CN103260235A - Timing adjustment method, mobile radio station, base station and mobile communication system - Google Patents
Timing adjustment method, mobile radio station, base station and mobile communication system Download PDFInfo
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Abstract
The invention provides a timing adjustment method, a mobile radio station, a base station and a mobile communication system. Under the condition that according to first sending timing adjustment information (TA#1), link processing is carried out on the base station (10) by the mobile radio station (20), aiming at sending processing before an expiry date of the first sending timing adjustment information (TA#1), the mobile radio station (20) applies the information (TA#1) to adjustment of sending timing when receiving second sending timing adjustment information (TA#2) in the process of the link processing. Aiming at sending processing after an expiry date of the information (TA#1), the mobile radio station (20) applies the second sending timing adjustment information (TA#2) to adjustment of the sending timing.
Description
The application is that the original bill application number is the application for a patent for invention (international application no: PCT/JP2008/060151 of No.200880129608.7, the dividing an application applying date: on 06 02nd, 2008, denomination of invention: timing adjusting method, mobile radio station, base station and mobile communication system).
Technical field
The present invention relates to timing adjusting method, mobile radio station, base station and mobile communication system.The present invention is used for the up (up link: UL) Control on Communication of wireless (movement) communication system sometimes.
Background technology
As wireless (movement) communication system that comprises wireless terminals (mobile radio station) such as mobile phone, provide the 3rd third-generation mobile communication service of employing Code Division Multiple Access (CDMA) (CDMA:code division multiple access) mode at present.On the other hand, also studied the next generation mobile communication mode that to carry out more high-speed communication.In third generation partner program (3GPP:3rd Generation Partnership Project), (LTE:Long Term Evolution) carries out the research of next generation mobile communication mode as long-term evolution.
In mobile communication system, when wireless base station (evolved Node B:eNB, enode b) and mobile radio station (User Equipment:UE, subscriber equipment) when beginning to communicate by letter, prepare the channel that when the eNB of UE begins to send, uses.In 3GPP, this channel is called Random Access Channel (RACH), is called based on the communication beginning process of RACH and inserts (RA) at random.
Access at random among the LTE designs according to Slotted Aloha mode, and guarantees for the time/frequency resource that sends RACH.In RACH, comprise for the information of eNB identification from the transmission of UE.That is, in order in a plurality of UE, to use RACH jointly, and comprise the identifier that is called as signature (perhaps lead code).
UE adopts the arbitrary signature among a plurality of signature candidates to send, even different UEs uses identical temporal frequency resource to send signature via RACH thus, as long as each UE adopts different signatures, eNB just can identify UE according to the signature that receives.
In addition, when the communication beginning, use RACH, use dedicated channel (or common signal channel) later on.
Carry out the opportunity that inserts at random as UE, (when producing down link (DL) data) in the time of when for example being first transmission (caller), from the eNB incoming call, when switching, when connecting the recovery after removing when communication (restart to have interrupted) etc.In addition, the Radio Link from eNB to the UE direction is down link (DL), and its rightabout Radio Link is up link (UL).
Here, when sending for the first time or connect to remove the back when recovering etc., sometimes can't be to existing but the UE that eNB can not manage distribute can exclusive use dedicated signatures.Such UE selects one and inserts at random from pre-prepd a plurality of (for example 64 kinds) signature.Therefore, though probability is low, might cause the situation that a plurality of UE use same signature to insert at random simultaneously.Such accidental access method is called the random access procedure (contention based random access procedure) based on competition.
At this moment, eNB solves the signature (UE) of (selection) competition, and responds to selected UE.UE judges according to the above-mentioned response that receives from eNB whether self is selected by eNB.The UE that is selected by eNB continues to communicate (random access procedure) with eNB, carry out and eNB between wireless channel setting etc.The UE that is selected by eNB is not inserting through carrying out at random again after the certain hour.
In addition, carry out to switch connect at UE under the situation of switching (handover) of destination eNB, when producing such signature conflict, connect that moment disconnects or according to circumstances cut off communication.Therefore, proposed in LTE, the UE that switches to be allocated in advance the scheme of dedicated signatures.Such accidental access method becomes non-random access procedure (non-contention based random access procedure) based on competition.
[non-patent literature 1]: 3GPP TS36.321V8.1.0, " Evolved Universal Terrestrial Radio Accesss(E-UTRA); Medium Acces Control(MAC) protocol specification "; [online]; on March 20th, 2008, [retrieval on May 22nd, 2008], the Internet＜URL:http: //www.3gpp.org/ftp/Specs/html-info/36321.htm 〉
In the prior art, in the process that inserts at random (carrying out in the way), sometimes owing to send the valid expiration date of regularly regulating information and expire etc., and in sending adjusting regularly etc. the generation unfavorable condition.
Summary of the invention
Therefore, the objective of the invention is to solve the unfavorable condition of generation in the transmission of regulating from the base station to the terminal (mobile radio station) regularly etc.
As one of other purpose, be reduced in mobile radio station be connected with the base station and can begin to communicate by letter before delay time.
In addition, the present invention is not limited only to above-mentioned purpose, can also orientate following action effect one of as other purpose, that is, the action effect as being derived by each structure shown in the aftermentioned execution mode can play the action effect that prior art can't obtain.
For example, adopt following means.
(1) can adopt timing adjusting method in the mobile communication system, this mobile communication system possesses: according to sending regularly the mobile radio station that adjusting information sends processing; And the base station that receives the signal that sends from this mobile radio station, wherein, above-mentioned mobile radio station is under the situation of carrying out the connection of above-mentioned base station is handled according to the 1st transmission timing adjusting information, connect in the process of handling at this, send when regularly regulating information when receiving the 2nd, sending the valid expiration date transmission in the past of regularly regulating information at the above-mentioned the 1st handles, send regularly adjusting information with the above-mentioned the 1st and be applied to send adjusting regularly, send the valid expiration date transmission afterwards of regularly regulating information at the above-mentioned the 1st and handle, send regularly adjusting information with the above-mentioned the 2nd and be applied to send adjusting regularly.
(2) can adopt timing adjusting method in the mobile communication system, this mobile communication system possesses: according to sending regularly the mobile radio station that adjusting information sends processing; And the base station that receives the signal that sends from this mobile radio station, wherein, under the situation that above-mentioned mobile radio station carries out the connection of above-mentioned base station is handled according to the 1st transmission timing adjusting information, in above-mentioned connection processing procedure, be sent to the signal of identifying information this mobile radio station, that comprise this mobile radio station from above-mentioned base station, comprise the 2nd and send regularly adjusting information.
(3) can adopt timing adjusting method in the mobile communication system, this mobile communication system possesses: according to sending regularly the mobile radio station that adjusting information sends processing; And the base station that receives the signal that sends from this mobile radio station, wherein, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, send when regularly regulating information when receiving the 2nd, above-mentioned mobile radio station is not used the 2nd and is sent regularly adjusting information and continue to use the above-mentioned the 1st and send regularly adjusting information, and prolongs the 1st and send regularly and regulate the valid expiration date of information.
(4) can adopt timing adjusting method in the mobile communication system, this mobile communication system possesses: according to sending regularly the mobile radio station that adjusting information sends processing; And the base station that receives the signal that sends from this mobile radio station, wherein, above-mentioned mobile radio station is under the situation of carrying out the connection of above-mentioned base station is handled according to the 1st transmission timing adjusting information, connect in the process of handling at this, when the 1st sent the transmission of signal that the valid expiration date of regularly regulating information comprising the identifying information of this mobile radio station and arrive before handling, above-mentioned mobile radio station sent the transmission of regularly regulating this signal of information and executing according to the above-mentioned the 1st and handles.
(5) can adopt timing adjusting method in the mobile communication system, this mobile communication system possesses: according to sending regularly the mobile radio station that adjusting information sends processing; And the base station that receives the signal that sends from this mobile radio station, wherein, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, when the 1st sent the transmission of signal that the valid expiration date of regularly regulating information comprising the identifying information of this mobile radio station and arrive before handling, above-mentioned mobile radio station was ended above-mentioned connection and is handled.
(6) can adopt timing adjusting method in the mobile communication system, this mobile communication system possesses: according to sending regularly the mobile radio station that adjusting information sends processing; And the base station that receives the signal that sends from this mobile radio station, wherein, under the situation that above-mentioned mobile radio station carries out the connection of above-mentioned base station is handled according to the 1st transmission timing adjusting information, connect in the process of handling at this, above-mentioned mobile radio station sends the signal of the identifying information that comprises this mobile radio station, when above-mentioned base station received this signal, above-mentioned base station was with the opportunity that is received as of this signal, and sending regularly with the 2nd, adjusting information is sent to above-mentioned mobile radio station.
(7) can adopt mobile radio station in the mobile communication system, this mobile communication system possesses: mobile radio station; With the base station that receives the signal that sends from this mobile radio station, wherein, this mobile radio station possesses: send handling part, it carries out the transmission of above-mentioned base station is handled according to sending regularly adjusting information; And control part, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, send when regularly regulating information when receiving the 2nd, handle at the above-mentioned the 1st transmission that sends the above-mentioned transmission handling part before the valid expiration date of regularly regulating information, this control part sends regularly adjusting information with the above-mentioned the 1st and is applied to send adjusting regularly, handle at the above-mentioned the 1st transmission that sends the above-mentioned transmission handling part after the valid expiration date of regularly regulating information, this control part will the above-mentioned the 2nd sends regularly the adjusting that adjusting information is applied to send timing.
(8) can adopt base station in the mobile communication system, this mobile communication system possesses: the mobile radio station that sends processing; With the base station that receives the signal that sends from this mobile radio station, wherein, this base station possesses control part, under the situation that above-mentioned mobile radio station carries out the connection of above-mentioned base station is handled according to the 1st transmission timing adjusting information, this control part in the signal of above-mentioned mobile radio station identifying information that send, that comprise this mobile radio station, comprises the 2nd and sends regularly adjusting information in the process that above-mentioned connection is handled.
(9) can adopt mobile radio station in the mobile communication system, this mobile communication system possesses: mobile radio station; With the base station that receives the signal that sends from this mobile radio station, wherein, this mobile radio station possesses: send handling part, it carries out the transmission of above-mentioned base station is handled according to sending regularly adjusting information; And control part, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, send when regularly regulating information when receiving the 2nd, this control part is not used the 2nd and is sent regularly adjusting information and continue to use the above-mentioned the 1st and send regularly adjusting information, and prolongs the 1st and send regularly and regulate the valid expiration date of information.
(10) can adopt mobile radio station in the mobile communication system, this mobile communication system possesses: mobile radio station; With the base station that receives the signal that sends from this mobile radio station, wherein, this mobile radio station possesses: send handling part, it carries out the transmission of above-mentioned base station is handled according to sending regularly adjusting information; And control part, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, when the 1st sent the transmission of signal that the valid expiration date of regularly regulating information comprising the identifying information of this mobile radio station and arrive before handling, this control part sent the transmission of regularly regulating this signal of information and executing according to the above-mentioned the 1st and handles.
(11) can adopt mobile radio station in the mobile communication system, this mobile communication system possesses: mobile radio station; With the base station that receives the signal that sends from this mobile radio station, wherein, this mobile radio station possesses: send handling part, it carries out the transmission of above-mentioned base station is handled according to sending regularly adjusting information; And control part, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, when the 1st sent the transmission of signal that the valid expiration date of regularly regulating information comprising the identifying information of this mobile radio station and arrive before handling, this control part was ended above-mentioned connection and is handled.
(12) can adopt base station in the mobile communication system, this mobile communication system possesses: mobile radio station, and adjusting information sends processing according to sending regularly for it; And the base station, it receives the signal that sends from this mobile radio station, and wherein, this base station possesses: Return Reception Dept., it receives the signal that sends from this mobile radio station; And control part, under the situation that above-mentioned mobile radio station carries out the connection of above-mentioned base station is handled according to the 1st transmission timing adjusting information, connect in the process of handling at this, when receiving the signal of the identifying information that comprises this mobile radio station by above-mentioned Return Reception Dept., this control part is with the opportunity that is received as of this signal, and sending regularly with the 2nd, adjusting information is sent to above-mentioned mobile radio station.
(13) can adopt mobile communication system, this mobile communication system possesses: mobile radio station, and adjusting information sends processing according to sending regularly for it; And base station, it receives the signal that sends from this mobile radio station, wherein, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, send when regularly regulating information when receiving the 2nd, above-mentioned mobile radio station sends the valid expiration date transmission in the past of regularly regulating information at the above-mentioned the 1st and handles, send regularly adjusting information with the above-mentioned the 1st and be applied to send adjusting regularly, send the valid expiration date transmission afterwards of regularly regulating information at the above-mentioned the 1st and handle, send regularly adjusting information with the above-mentioned the 2nd and be applied to send adjusting regularly.
(14) can adopt mobile communication system, this mobile communication system possesses: mobile radio station, and adjusting information sends processing according to sending regularly for it; And base station, it receives the signal that sends from this mobile radio station, wherein, under the situation that above-mentioned mobile radio station carries out the connection of above-mentioned base station is handled according to the 1st transmission timing adjusting information, in above-mentioned connection processing procedure, be sent to the signal of identifying information this mobile radio station, that comprise this mobile radio station from above-mentioned base station, comprise the 2nd and send regularly adjusting information.
(15) can adopt mobile communication system, this mobile communication system possesses: mobile radio station, and adjusting information sends processing according to sending regularly for it; And base station, it receives the signal that sends from this mobile radio station, wherein, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, send when regularly regulating information when receiving the 2nd, above-mentioned mobile radio station is not used the 2nd and is sent regularly adjusting information and continue to use the above-mentioned the 1st and send regularly adjusting information, and prolongs the 1st and send regularly and regulate the valid expiration date of information.
(16) can adopt mobile communication system, this mobile communication system possesses: mobile radio station, and adjusting information sends processing according to sending regularly for it; And base station, it receives the signal that sends from this mobile radio station, wherein, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, when the 1st sent the transmission of signal that the valid expiration date of regularly regulating information comprising the identifying information of this mobile radio station and arrive before handling, above-mentioned mobile radio station sent the transmission of regularly regulating this signal of information and executing according to the above-mentioned the 1st and handles.
(17) can adopt mobile communication system, this mobile communication system possesses: mobile radio station, and adjusting information sends processing according to sending regularly for it; And base station, it receives the signal that sends from this mobile radio station, wherein, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, when the 1st sent the transmission of signal that the valid expiration date of regularly regulating information comprising the identifying information of this mobile radio station and arrive before handling, above-mentioned mobile radio station was ended above-mentioned connection and is handled.
(18) can adopt mobile communication system, this mobile communication system possesses: mobile radio station, and adjusting information sends processing according to sending regularly for it; And base station, it receives the signal that sends from this mobile radio station, wherein, under according to the 1st transmission situation that regularly adjusting information carries out the connection of above-mentioned base station is handled, connect in the process of handling at this, above-mentioned mobile radio station sends the signal of the identifying information that comprises this mobile radio station, when above-mentioned base station receives this signal, above-mentioned base station is with the opportunity that is received as of this signal, and sending regularly with the 2nd, adjusting information is sent to above-mentioned mobile radio station.
As effect of the present invention, can solve the undesirable condition of generation in the adjusting regularly of the transmission from the base station to the mobile radio station etc.Can also be reduced in mobile radio station be connected with the base station and can begin to communicate by letter before delay time.
Description of drawings
Fig. 1 is the block diagram of an example that wireless (movement) communication system of the 1st execution mode is shown.
Fig. 2 is the sequential chart that illustrates based on an example of the random access procedure of competing.
Fig. 3 is the flow chart that illustrates based on the action of the UE in the random access procedure of competition example.
Fig. 4 is the flow chart that illustrates based on the action example of the eNB in the random access procedure of competition.
Fig. 5 is the sequential chart of an example that the UL Control on Communication (method 1-1) of the 1st execution mode is shown.
Fig. 6 is another routine sequential chart that the UL Control on Communication (method 1-1) of the 1st execution mode is shown.
Fig. 7 is another routine sequential chart that the UL Control on Communication (method 1-1) of the 1st execution mode is shown.
Fig. 8 is the flow chart of an example of UL Control on Communication (method 1-1) that the UE of the 1st execution mode is shown.
Fig. 9 is the sequential chart of an example that the UL Control on Communication (method 1-2) of the 1st execution mode is shown.
Figure 10 is another routine sequential chart that the UL Control on Communication (method 1-2) of the 1st execution mode is shown.
Figure 11 is another routine sequential chart that the UL Control on Communication (method 1-2) of the 1st execution mode is shown.
Figure 12 is the flow chart of an example of UL Control on Communication (method 1-2) that the UE of the 1st execution mode is shown.
Figure 13 is the sequential chart of an example that the UL Control on Communication (method 1-3) of the 1st execution mode is shown.
Figure 14 is another routine sequential chart that the UL Control on Communication (method 1-3) of the 1st execution mode is shown.
Figure 15 is another routine sequential chart that the UL Control on Communication (method 1-3) of the 1st execution mode is shown.
Figure 16 is the flow chart of an example of UL Control on Communication (method 1-3) that the UE of the 1st execution mode is shown.
Figure 17 is the sequential chart of an example that the UL Control on Communication (method 1-4) of the 1st execution mode is shown.
Figure 18 is another routine sequential chart that the UL Control on Communication (method 1-4) of the 1st execution mode is shown.
Figure 19 is another routine sequential chart that the UL Control on Communication (method 1-4) of the 1st execution mode is shown.
Figure 20 is the flow chart of an example of UL Control on Communication (method 1-4) that the UE of the 1st execution mode is shown.
Figure 21 is the sequential chart of an example that the UL Control on Communication (method 2-1) of the 2nd execution mode is shown.
Figure 22 is another routine sequential chart that the UL Control on Communication (method 2-1) of the 2nd execution mode is shown.
Figure 23 is another routine sequential chart that the UL Control on Communication (method 2-1) of the 2nd execution mode is shown.
Figure 24 is the flow chart of an example of UL Control on Communication (method 2-1) that the UE of the 2nd execution mode is shown.
Figure 25 is UL Control on Communication (method 2-2, the sequential chart of example 2-3) that the 2nd execution mode is shown.
Figure 26 is UL Control on Communication (method 2-2, the sequential chart that 2-3) another is routine that the 2nd execution mode is shown.
Figure 27 is UL Control on Communication (method 2-2, the sequential chart that 2-3) another is routine that the 2nd execution mode is shown.
Figure 28 is the flow chart of an example of UL Control on Communication (method 2-2) that the UE of the 2nd execution mode is shown.
Figure 29 is the flow chart of an example of UL Control on Communication (method 2-3) that the UE of the 2nd execution mode is shown.
Figure 30 is the sequential chart of an example that the UL Control on Communication (method 2-4) of the 2nd execution mode is shown.
Figure 31 is another routine sequential chart that the UL Control on Communication (method 2-4) of the 2nd execution mode is shown.
Figure 32 is another routine sequential chart that the UL Control on Communication (method 2-4) of the 2nd execution mode is shown.
Figure 33 is the flow chart of an example of UL Control on Communication (method 2-4) that the UE of the 2nd execution mode is shown.
Figure 34 is the sequential chart of an example that the UL Control on Communication (method 3-3) of the 3rd execution mode is shown.
Figure 35 is another routine sequential chart that the UL Control on Communication (method 3-3) of the 3rd execution mode is shown.
Figure 36 is the flow chart of an example of UL Control on Communication (method 3-3) that the eNB 10 of the 3rd execution mode is shown.
Figure 37 is the flow chart of an example of UL Control on Communication (method 3-3) that the UE of the 3rd execution mode is shown.
Label declaration
10 wireless base stations (eNB)
11 dual-mode antennas
12 receiving and transmitting parts
13 buffer memory portions
The synchronous detection unit of 14UL
15 timer management portions
151UL synchrotimer (TA timer)
16UL department of resource management
20 wireless terminals (UE)
21 dual-mode antennas
22 receiving and transmitting parts
23 buffer memory portions
The synchronous detection unit of 24UL
25 timer management portions
251UL synchrotimer (TA timer)
252 memories
26UL department of resource management
Embodiment
Below, with reference to accompanying drawing execution mode is described.But below Shuo Ming execution mode is only to be illustration, the various distortion of not expressing below the eliminating application and the meaning of technology.That is, present embodiment can be carried out various distortion (making up each embodiment etc.) and implemented in the scope that does not break away from its purport.
(1) the 1st execution mode
Fig. 1 is the block diagram of an example that wireless (movement) communication system of the 1st execution mode is shown.The illustrated system of this Fig. 1 possesses: as the eNB10 of wireless base station one example with as the UE20 of wireless terminal (mobile radio station) example, this UE20 communicates by letter with eNB10 via Radio Link in the wireless zone of eNB10.
In this Fig. 1, pay close attention to 1 eNB10 and 1 UE20, but in above-mentioned wireless communication system, can have a plurality of eNB10 and UE20 respectively.In above-mentioned Radio Link, contain the DL(up link) and the UL(down link) wireless channel.In the wireless channel of above-mentioned DL and UL, can comprise the dedicated channel that the common signal channel that shared by a plurality of UE and each UE can exclusive uses respectively.
In addition, as long as do not specify, also be general in the structure of illustrative eNB10 and UE20 the 2nd and the 3rd execution mode afterwards among Fig. 1.In addition, suppose that also wireless base station 10 in this example is the eNB that possess among the LTE of part or all function of radio network control apparatus (RNC), but also can be than LTE previous generation (not making up the function of RNC) base station.In addition, can also be the base station of having stipulated other system of random access procedure.
(1.1) explanation of eNB
Exemplarily, eNB10 possesses: dual-mode antenna 11, receiving and transmitting part 12, buffer 13, the synchronous detection unit 14 of UL, timer management portion 15 and UL department of resource management 16.
Below the dual-mode antenna 11(, only be expressed as " antenna 11 " sometimes) send and can be present in the DL wireless signal that the UE20 in the wireless zone (residential quarter or sector) that eNB10 provides receives, on the other hand, receive the UL wireless signal that UE20 sends.
12 pairs of receiving and transmitting parts will send to the transmission of transmission data (comprising user data, control data etc.) the enforcement regulation of UE20 and handle, and generate the signal of wireless channel, and export dual-mode antenna 11 to.Exemplarily, above-mentioned transmission is handled and can be comprised: DL send coding, the coded data of data modulation, modulation signal is mapped to the predetermined channel frame, is the power amplification etc. of wireless frequency (up-conversion), radio frames with the frame signal frequency inverted.Above-mentioned radio frames for example can be used based on OFDM (Orthogonal Frequency Division Multiplexing, OFDM) or OFDM (Orthogonal Frequency Division Multiple Access, radio frames OFDMA).
In addition, the UL wireless signal (radio frames) that 12 pairs of antennas 11 of receiving and transmitting part receive is implemented the reception of regulation and is handled, and obtains the UL data (comprising user data, control data etc.) that UE20 sends.Exemplarily, above-mentioned reception is handled and can be comprised: the low noise that receives signal amplifies, be base band frequency (down-conversion), gain-adjusted, demodulation, decoding etc. with frequency translation.In addition, receiving and transmitting part 12 can possess sending part and acceptance division respectively on function.
The 13 interim UL of preservation of buffer memory portion receive data and/or DL sends data.
The TA value is to send regularly control information a kind of who receives regularly consistent (synchronously) and employing with the UL data of eNB10 for the UL data that make UE20.That is, when the UL transmission of UE20 is regularly regulated, use the TA value, make in receiving and transmitting part 12, can receive processing with suitable timing.Therefore, UE20 regulates UL according to the TA value that receives from eNB10 and sends regularly, can guarantee that thus UL is synchronous.
UE20 is not limited to rest on same position, thus the TA value is and eNB10 and UE20 between the corresponding variable value of distance (position of UE20).Thus, for UE20 guarantees that (keeping) UL is synchronous, expectational cycle ground upgrades the TA value.
As an example that realizes this renewal, eNB10 generates with the corresponding TA value in the position of UE20 periodically and is notified to UE20.To be called the TA instruction for the DL control signal of this notice.ENB10 can use the UL control signal that receives from UE20 in order to grasp the position of UE20.The control signal that is used for this mensuration is known signal, for example SRS(Sounding Reference Signal: detection reference signal).
In addition, timer management portion 15 has UL synchrotimer (TA timer) 151.This TA timer 151 is that opportunity starts so that UE20 is sent (notice) TA value.Timer management portion 15 monitors its timer value.UE20 moves along with it and changes the position, is not effective all the time so notify the TA value of UE20.Therefore, adopt TA timer 151(regularly to aim at timer) come monitor for notifications to arrive the valid expiration date of the TA value of UE20.Whenever generating, when notifying new TA value, restarting TA timer 151.
The synchronous detection unit of UL (control part) 14 monitors TA timer 151(timer values), for when receiving the UL data or when sending the DL data, by UL confirmation of receipt response, and judge that whether to guarantee (to have kept) UL synchronous.For example, when the full journey (overtime) of TA timer 151, even guaranteed that (keeping) actual (lower layer) UL is synchronous, be judged to be also that to have lost UL synchronous.
UL department of resource management 16 management is being carried out communicate by letter UL resource (for example, channel frequency and time (transmitting-receiving regularly) etc.) of using in (also comprising the communication when inserting at random) and distribute and discharge of UL with UE20.When above-mentioned radio frames was used the form of OFDMA mode, the management of above-mentioned Radio Resource was equivalent to manage the configuration (mapping) by 2 dimension transmitting-receiving zones (being called burst (burst)) of sub-channel frequencies and symbol time regulation.
Physical Uplink Control Channel) and be used for the resource that eNB10 estimates channel and measures the SRS of above-mentioned UE20 position etc. exemplarily, above-mentioned UL resource can comprise UL control channel for the UE20 special use (PUCCH:Physical Uplink Control Channel:.Channel quality information), SRI(Scheduling ReqUEst Indicator in addition, the PUCCH resource can be included in UE20 and send CQI(Channel Quality Information to eNB10:: the resource of using in the time of the dispatch request index).
The CQI resource is used for to the accepting state (quality) of eNB10 report UE20.ENB10 can suitably control the transmission (sending data volume, modulation system, encoding rate etc.) of DL according to the CQI that receives from UE20.
The SRI resource is used for guaranteeing under the synchronous situation of UL that UE20 informs to eNB10 and produced the UL data in UE20.The UE20 of unallocated SRI resource can carry out at random and to insert and inform to eNB10 and to have produced the UL data.In addition, for the UE20 that guarantees that not UL is synchronous, under the situation that has produced the UL data, can carry out at random and to insert and inform to eNB10 and to have produced the UL data.
UL department of resource management 16 allows to discharge and has distributed to the PUCCH resource (CQI resource, SRI resource) of UE20 and the distribution of SRS resource under the overtime situation of TA timer 151.
(1.2) explanation of UE
On the other hand, exemplarily, UE20 shown in Figure 1 possesses: dual-mode antenna 21, receiving and transmitting part 22, buffer 23, the synchronous detection unit 24 of UL, timer management portion 25 and UL department of resource management 26.
Below the dual-mode antenna 21(, abbreviate " antenna 21 " as) in the wireless zone (residential quarter or sector) that eNB10 provides, send the UL wireless signal of going to eNB10, on the other hand, receive the DL wireless signal that eNB10 sends.
22 pairs of receiving and transmitting parts are sent to the transmission of UL transmission data (comprising user data, control data etc.) the enforcement regulation of eNB10 and handle to generate the signal of wireless channel, and output to dual-mode antenna 21.Exemplarily, above-mentioned transmission is handled and can be comprised: UL send coding, the coded data of data modulation, with modulation signal be mapped to the predetermined channel frame, with the frame signal frequency inverted to wireless frequency (up-conversion) and the power etc. that amplifies radio frames.
In addition, the reception that 22 pairs of DL wireless signals (radio frames) that received by antenna 21 of receiving and transmitting part are implemented regulation is handled, and obtains the DL data (comprising user data, control data etc.) that eNB10 sends.Exemplarily, above-mentioned reception is handled and can be comprised: the low noise that receives signal amplifies, frequency inverted is arrived base band frequency (down-conversion), gain-adjusted, demodulation, decoding etc.In addition, receiving and transmitting part 22 can possess sending part and acceptance division respectively on function.
The 23 interim UL of preservation of buffer memory portion send data and/or DL receives data.
The synchronous detection unit of UL (control part) 24 monitors TA timer 251(timer value), when carrying out the transmission of UL data, it is synchronous whether judgement guarantees (to have kept) UL.Under the overtime situation of TA timer 251, be judged to be that to have lost UL synchronous.Therefore, under the situation of ignoring the TA value that receives from eNB10 in random access procedure, TA timer 251 is overtime and be judged to be that to have lost UL in the way of random access procedure synchronous sometimes.
UL resource and release thereof that 26 management of UL department of resource management distribute from eNB10., UL synchronous detection unit 24 251 overtime at the TA timer is judged to be and lost under the synchronous situation of UL, and UL department of resource management 26 allows to discharge the UL resource of distributing.
(1.3) based on the random access procedure of competing
Below, adopt Fig. 2～Fig. 4 to illustrate as being connected the random access procedure based on competition of handling an example substantially between above-mentioned eNB10 and the UE20.Fig. 2 is the sequential chart that illustrates based on random access procedure one example of competition.Fig. 3 is the flow chart based on random access procedure one example of competing that illustrates among the UE20, and Fig. 4 is the flow chart based on random access procedure one example of competing that illustrates among the eNB10.
When sending (UE20 first) and the DL data that are sent to UE20 arrive eNB10 and receive the call-in reporting of DL data from eNB10 when having produced the UL data in UE20 etc., carry out the random access procedure based on competition.The former situation of flow chart illustration of Fig. 3, the flow chart illustration latter's of Fig. 4 situation.
Such as illustrated in Figure 3, when producing the UL data in UE20, UE20 judges whether guaranteed that UL (handles 1101～processing 1103) synchronously by the synchronous detection unit 24 of UL.
As result of determination, when not guaranteeing that UL is synchronous (being "No" in processing 1103), UE20 selects 1 by UL department of resource management 26 from pre-prepd a plurality of signatures (lead code).In order to reduce the possibility of between UE, selecting same signature as far as possible, can adopt according to the random number that produces and various systems of selection such as select.Selected signature packets is contained in message #1(RA lead code) in, send to the processing 1011 of eNB10(Fig. 2 and the processing 1104 of Fig. 3 by RACH from receiving and transmitting part 22).
When eNB10 receives above-mentioned message # 1, will with its corresponding response message #2(RA response) be sent to the processing 1012 of UE20(Fig. 2).In this RA response # 2, can comprise: eNB10 and can receive that the transmission of the identifier of one or more signatures of (judgements), the UL common signal channel corresponding with this signature is permitted, the identifier of distribution etc. temporarily in order to identify later RA communication object (UE20).This identifier is called as temporary-connection radio network temporary identifier(T-CRNTI) (connecting the wireless network temporary indentification) temporarily.
When UE20 receives RA response # 2 from eNB10 (processing 1105 of Fig. 3), confirm whether in this reception information, to comprise the identifier of the signature that sends by above-mentioned message # 1.
Comprising under the situation of identifier, UE20 carries out transmission (the Scheduled Transmission: scheduled transmission) (processing 1013 of Fig. 2 and the processing 1106 of Fig. 3) of message # 3 according to this RA response # 2 transmission permission that comprise, corresponding with the signature that self sends.This message # 3 is the signal that comprises the dispatch request of eNB10, can comprise the system architecture evolution(SAE as identiflication number one example of UE20, system architecture evolution)-and temporary mobile subscriber identity(S-TMSI, temporary mobile subscriber identity) etc.
Here, UE20 selects signature by above-mentioned message # 1, adopts same signature to send the situation of message # 1 to eNB10 simultaneously but may produce a plurality of UE20.
In this case, though eNB10 can not differentiate these UE20, can be by receiving the identifying information (numbering) that sent by above-mentioned message # 3 by UE20 (S-TMSI), be identified in that having produced between which UE20 signs competes.Therefore, eNB10 can select any one UE20 to solve competition.The standard of this selection can adopt the received electric field strength of message #1.For example, eNB10 selects the received electric field strength of message # 1 than other big UE20.
ENB10 sends message #4(Contention Resolution to solve the UE20 that selects by competition: competition solves) (processing 1014 of Fig. 2).The information that in this message # 4, can comprise the S-TMSI that sends by message # 3 etc.
When UE20 receives above-mentioned message # 4 from eNB10 (processing 1107 of Fig. 3), check whether have competition (checking the identifying information that whether comprises self) (processing 1108 of Fig. 3) with other UE20, if do not compete, then finish UL and connect processing (the "No" path of the processing 1108 of Fig. 3).After, UE20 uses the temporary indentification (T-CRNTI) of above-mentioned interim distribution as identifier (the C(cell)-RNTI that determines) communicate with eNB10.
On the other hand, as the result who receives message # 4, and other UE20 between when having competition (identifying information that does not comprise self) (handling in 1108 under the situation of "Yes"), the time (handling 1111) that this UE20 standby rollback (backoff) is specified.So-called rollback is exactly to specify the UE20 retry based on the information of the timing (stand-by time) of the random access procedure of competition.
The parameter of rollback is notified by message # 2, can be by changing its rollback at each UE20, the probability of competing again when being reduced in retry thus.Specifically, notify the maximum rollback time by message # 2, UE20 calculates the rollback time in this time range.In this calculating, can adopt various computational methods such as for example using random number.
Then, UE20 checks the retry by next random access procedure, and whether number of retries surpasses maximum times (handling 1112).If do not surpass (in that to handle in 1112 be "No"), then UE20 carries out the later processing of above-mentioned processing 1103, retry random access procedure (carrying out the transmission of message # 1).(handling in 1112 under the situation of "Yes") under the situation about surpassing, UE20 notifies this situation (processing 1113) to upper layer.Above-mentioned upper layer for example is radio resource control (radio resource control, RRC) layer that belongs to layer 3.
The upper layer that receives above-mentioned notice starts the watchdog timer that the continuation (retry) that inserts is at random monitored.When this watchdog timer was overtime, the upper layer of UE20 was carried out the eNB10(residential quarter to UL connection request (transmission of message #1) destination) reelect control (residential quarter selects to control or control is reselected in the residential quarter).
In addition, in above-mentioned processing 1103, guaranteeing (handling in 1103 is under the situation of "Yes") under the synchronous situation of UL, UE20 checks whether PUCCH resource (SRI resource) assigns (handling 1109).If assign (being "Yes" in 1109 handling), then UE20 adopts the SRI resource with the SRI(UL data sending request) be sent to eNB10(and handle 1110).
If do not distribute SRI resource (being "No") in processing 1109, then the eNB10 of UE20 sends message # 1, and carries out random access procedure.That is, set up under the synchronous situation even in processing 1103, be judged to be, when not having SR PUCCH resource, also had the situation of carrying out random access procedure.
On the other hand, Fig. 4 illustration the DL data random access procedure when arriving eNB10 and carrying out DL data call-in reporting from eNB10 to UE20, eNB10 that sends to UE20.
That is, (handle 1201) when the DL data that send to UE20 arrive eNB10, eNB10 judges whether guaranteed UL (handle 1202 and handle 1203) synchronously by the synchronous detection unit 14 of UL.(be "No" in processing 1203) synchronously if guarantee UL, then eNB10 is to the situation (handling 1204) of UE20 notice DL data arrival.
In this notice (call-in reporting), can also comprise dedicated preamble, but not comprise dedicated signatures (dedicated preamble) in the UE20 in the present embodiment.Therefore, the UE20 that receives above-mentioned call-in reporting carries out the above-mentioned random access procedure based on competition.At this moment, under the situation of the UL resource of before having, distributing, discharge this UL resource, and after inserting successfully at random, distribute new UL resource from eNB10.
When eNB10 from having begun to receive message #1(RA lead code based on the UE20 of random access procedure of competition) time (handling 1205), its response (message #2) is returned to UE20(handles 1206).
Then, when receiving message # 3 from UE20 (handle 1207), eNB10 checks whether have message collision (handling 1208), if not have then message # 4 is sent to UE20(from handling 1208 "No" path to processing 1209).If have message collision (in the "Yes" of handling in 1208), then the eNB10 transmission of not carrying out message # 4 just finishes random access procedure.
More than be based on the basic process that inserts at random of competition.Here, suppose the situation of the value (the TA timer 151 of eNB10 is asynchronous with the timer value of the TA timer 251 of UE20) of the TA timer 251 of eNB10 in can not correct management UE20.
Exemplarily, consider that the TA timer 251 of UE20 continues timing, but because eNB10 can't grasp this continuation timing, so eNB10 thinks the overtime situation of TA timer 251 of UE20 mistakenly.
(Fig. 9～Figure 11, Figure 13～Figure 15, Figure 17～Figure 19) illustrate the one example to Fig. 5～Fig. 7.When the UE20 of eNB10 carries out calling and setting and UL resource (for example, SRI resource # 1, CQI resource # 1, SRS resource #1) branch timing (handling 1008), periodically send TA instruction (handling 1009) to UE20.Receive this TA instruction (TA value=TA# 1; The 1st timing adjusting information) UE20 starts TA timer 251.
UE20 carries out the transmission of UL according to the TA# 1 by above-mentioned TA instruction notification, and after this sent end, when the DL data that send to UE20 arrived eNB10, the UE20 of eNB10 carried out call-in reporting (transmission of message #0) (handling 1010).The UE20 that receives this call-in reporting # 0 in order to ensure UL synchronously and resource, beginning is based on the random access procedure of competition.
That is, the message # 1 that UE20 will comprise selected signature (lead code at random) is sent to eNB10(processing 1011), the eNB10 that receives this message # 1 responds #2 with RA and is back to UE20(processing 1012).At this moment, eNB10 is with new TA value (TA# 2; The 2nd timing adjusting information) be included in the RA response # 2.
The UE20 that receives this RA response # 2 can use new TA# 2 and restart TA timer 251, but also can allow to ignore this TA# 2 as described above.Under situation about ignoring, sometimes after message # 3 send (handling 1013) and message # 4 receives between (processing 1014), TA timer 251 is overtime.
In this case, lose UL synchronously and after discharging whole UL resources of guaranteeing so far when being judged to be among the UE20, can not send the UL data beyond the RACH.
Therefore, in this example, under the overtime situation of TA timer 251 in based on the random access procedure of competition, guarantee UL as follows synchronously and the UL resource.In addition, afterwards in explanation (also comprising other execution mode described later) employed accompanying drawing, only otherwise specify that identical or same processing is represented in the processing that has marked same processing numbering.
(1.4) when receiving message # 4, not have to produce and the situation of the competition of other UE20
Show under the situation (inserting case of successful at random) of the competition that does not have generation and other UE20, can be to having carried out the situation that the UE20 that inserts at random guarantees special-purpose UL resource.But, because TA timer 251 is in timeout mode, therefore can not be called and can guarantees that UL is synchronous.
Therefore, UE20 adopts among 4 method 1-1～1-4 shown below any one to guarantee that UL is synchronous.
(1.4.1) method 1-1(Fig. 5～Fig. 8)
As illustrated in Fig. 8, the TA value (TA#2) that UE20 will receive by above-mentioned message # 2 in based on the random access procedure of competition stores in the memory 252 of timer management portion 25 (processing 1105a) in advance.
In addition, UE20(UL department of resource management 26) lost under the synchronous situation of UL identifying, discharged based on handling institute based on the transmission that receives TA# 1 before the inserting at random of competition and uses (inserting at random before beginning from eNB10 distribution) UL resource starting.
For example as shown in Figure 5, this release regularly can be the timing (identifying the synchronous management of UL and the inconsistent timing of eNB10) (handling 2001) that receives above-mentioned call-in reporting message # 0, perhaps as shown in Figure 6, this release regularly also can be the overtime timing (handling 2002) of TA timer 251.But, as shown in Figure 7, even TA timer 251 is overtime, also can not discharge this UL resource and the state that keeps guaranteeing (continuing to use) (handling 2003).
Then, UE20 continues the random access procedure based on competition, when the reception of message # 4 success, the TA value (TA#2) that UE20 stores memory 252 is applied to UL and sends, and restarts TA timer 251(from handling 1108 "No" path to processing 1114).
That is, after TA timer 251 was overtime, in the process that inserts at random, UE20 was to receive the message #2(response signal that comprises as the T-CRNTI of self identifying information one example) be opportunity, allow application TA#2.In addition, so-called " using the TA value " is exactly the transmission (execution of Jie Ruing at random) of regularly controlling UL according to the transmission shown in the TA value.For example, a function that can be used as the synchronous detection unit 24 of UL realizes this control (hereinafter too).
At this moment, the value of TA timer 251 can be setting, also can regularly set according to the reception of message #2.For example, can make UL success when the reception of message # 2 synchronously, deduct from the required time of the reception that receives message # 4 of message # 2 from setting, set the value of TA timer 251.This expression make timer value (regularly regulate the valid expiration date of information) in advance from the notice that receives TA# 2 by message # 2 to the notified time of inserting at random till the result.
So in this example, UE20 carries out situation about inserting at random to eNB10 according to TA# 1 under, in the process that this inserts at random, when receiving TA# 2, handle at the transmission before TA timer 251 overtime (valid expiration date of TA#1), TA# 1 is applied to send adjusting regularly.Transmission at TA timer 251 overtime backs (after the valid expiration date of TA#1) is handled, and TA# 2 is applied to send adjusting regularly.
Thus, even do not carry out based on the transmission of TA# 2 immediate updating regularly, also can after surpass the valid expiration date of TA#1 (after overtime), use TA# 2 and send control.
Then, UE20 will return to eNB10(at the affirmation response message (ACK or NACK) of message # 4 and handle 1015).If eNB10 receives ACK as the affirmation response message at message # 4, then new UL resource (for example, SRI resource # 2, CQI resource # 2, SRS resource #2) is distributed to UE20(and handled 1016).
In addition, as illustrated in Fig. 7, even under the overtime situation that does not also discharge the UL resource of the TA of UE20 timer 251, UE20 can continue to use the UL resource of guaranteeing, also can distribute the new UL resource (handling 1017) that replaces this UL resource to the eNB10 request.
The UE20 UL resource that administrative institute distributes in UL department of resource management 26, after, adopt this UL resource to carry out the UL of eNB10 is sent.
(1.4.2) method 1-2(Fig. 9～Figure 12)
As the 2nd method, as illustrated in Fig. 9～Figure 12, UE20 will be stored in advance by the TA value (TA#2) that message # 2 receives in the memory 252 and (handle 1105a).Then, suppose handling 1013 from sending message #3() to receiving message #4(processing 1014) during TA timer 251 overtime.
In the case, the do not wait for the arrival of news reception of #4 of UE20, the TA value (TA#2) that memory 252 is stored is applied to UL and sends, restart TA timer 251(from the "Yes" path of the processing 1161 of Figure 12 to handling 1162).The opportunity of restarting can with the overtime while of TA timer 251.That is, in the TA timer moment of 251 overtime (valid expiration dates of TA#1), allow to use the TA# 2 that receives by message # 2.
Thus, even do not carry out based on the transmission of TA# 2 immediate updating regularly, also can be when surpassing the valid expiration date of TA# 1 when overtime (), use TA# 2 and send control.
(1.4.3) method 1-3(Figure 13～Figure 16)
As the 3rd method, as illustrated in Figure 13～Figure 16, suppose when eNB10 sends message # 4, to comprise new TA value (TA#3) (the processing 1107a of processing 1014a, Figure 16 of Figure 13～Figure 15).
Namely, send regularly adjusting information at UE20 according to TA#1(the 1st) when carrying out the access at random to eNB10, in the process that this inserts at random, eNB10 comprises signal as the S-TMSI of identifying information one example of UE20 at the message #4(that is sent to UE20) in comprise TA#3(the 2nd and send regularly adjusting information).
When UE20 received this message # 4 from eNB10, the TA value (TA#3) that this message # 4 is comprised was applied to the UL transmission, and started the processing 1114 of TA timer 251(Figure 16).
Namely, usually in the message # 4 that comprises the mobile radio station identifying information, do not comprise the TA value, but in the present embodiment, by containing the TA value at message # 4, ignored the TA value that the UE20 of the TA# 2 that receives by message # 2 can application message # 4 thus, regularly regulate information as transmission afterwards, and start TA timer 251.
In addition in this example, UE20 also can be stored in the above-mentioned TA# 2 that ignores in the memory 252.
(1.4.4) method 1-4(Figure 17～Figure 20)
As the 4th method, as illustrated in Figure 17～Figure 20, whether UE20 has nothing to do by the TA value (TA#2) that message # 2 receives with storing from eNB10, and all the opportunity that is received as with message # 2 restarts TA timer 251.
In this case, UE20 continues the access at random (UL transmission) (the processing 1105b of Figure 20) after the TA value (TA#1) that receives from eNB10 before the beginning random access procedure is applied to.This is equivalent to control TA timer 251 so that in the process that inserts at random, prolonged before inserting beginning at random from eNB10 by the TA command reception to UL send valid expiration date regularly.
That is, UE20 in the process that this inserts at random, when receiving TA# 2, does not use TA# 2 and continues to use TA# 1, and prolong the valid expiration date of TA# 1 under the situation about inserting at random of carrying out according to TA# 1 eNB10.
In addition, (at the value of the TA timer 251 of TA#2) can be setting during prolonging, and also can regularly set according to the reception of message #2.For example, can deduct synchronously from receiving message # 2 to the overtime required time of TA# 1 from UL, set the value of TA timer 251.
According to this example, after TA# 2 receives, also can continue to prolong TA# 1 and utilize, and can be applied to send adjusting regularly.
(1.5) situation of the competition of generation and other UE20 when receiving message # 4
Under the situation of the competition of generation and other UE20, the UL resource used with other UE20 repeats when receiving message # 4, means to guarantee special-purpose UL resource to this machine 20.
Therefore, the UE20 not UL data except RACH sends, so carry out the retry that inserts at random based on competition, attempts guaranteeing UL (the "Yes" path of the processing 1108 of Fig. 3) synchronously.
(2) the 2nd execution modes
In above-mentioned the 1st execution mode, suppose send from UE20 message # 3 to receive from eNB10 message # 4 during, the situation that the TA timer of UE20 251 is overtime.In the present embodiment, suppose receiving from eNB10 from UE20 message # 2 to send to eNB10 message # 3 during, the situation that the TA timer of UE20 251 is overtime.
For example, as illustrated in Figure 21～Figure 23, Figure 25～Figure 27 and Figure 30～Figure 32, when carrying out call-in reporting (handling 1010) as the DL data arrival eNB10 that sends to UE20 and to UE20, carry out the access at random (transmission of message #1: handle 1011) based on competition.In the case, when the UE20 that receives TA value (TA#2) by message # 2 from eNB10 ignores this TA# 2, comprising signal as the S-TMSI of identifying information one example of UE20 sending message #3(sometimes) TA timer 251 is overtime before.
In this case, the synchronous detection unit 24 of UE20(UL) be judged to be that to have lost UL synchronous, any one among 2-1～2-4 continues to insert at random by the following method.
(2.1) method 2-1(Figure 21～Figure 24)
In UE20, lose UL when synchronous when being judged to be, do not carried out the transmission of message # 3 originally.But TA timer 251 often is set to the failure safe (fail safe) of the synchronous scope of the UL that do not lose in the physical layer.Therefore, even TA timer 251 is overtime, can also guarantee that sometimes actual (lower layer) UL is synchronous.
Therefore, in this example, even UE20 receives message #2(from eNB10 and handles 1012) TA timer 251 is overtime afterwards, this UE20 attempts that still eNB10 is sent message #3(to be forced to send) (the processing 1105c of processing 1013a, Figure 24 of Figure 21～Figure 23 and processing 1106a).That is, though overtime, can use TA# 1 and send message #3.In addition, TA# 2 can be stored in the memory 252 in advance.
Namely, UE20 carries out situation about inserting at random to eNB10 according to TA# 1 under, in the process that this inserts at random, when arriving before the transmission of carrying out message # 3 when the valid expiration date of TA# 1 is handled, even before the valid expiration date of TA# 1 arrives, received TA# 2, also can carry out the transmission processing that sends message # 3 to eNB10 according to TA# 1.
Thus, if eNB10 can receive message # 3, then UE20 can be from from the beginning of the access of revising based on competition at random, and continues later random access procedure.That is, if as at the response signal of message # 3, UE20 successfully receives the message # 4 that comprises self identifying information, and the transmission that then TA# 2 can be applied to after this to send processing is regularly regulated, and starts TA timer 251.Therefore, can reduce the UL data and send delaying before the beginning.
But, because eNB10 can identify the situation that the what is called of UE20 pressure transmission message # 3 violates the rules, therefore can also connection refused message be sent to UE20 by message #4.That is, eNB10 can be sent to UE20 with refuse information surpassing when receiving the message # 3 that sends according to TA# 1 from UE20 after the valid expiration date of TA# 1.
At this moment, UE20 carries out the retry that random access procedure was selected/reselect or carried out in the residential quarter.Perhaps eNB10 can also not send message # 4 wittingly.In this case, the repeating transmission of UE20 continuation message # 3 is till arriving the repeating transmission number of times (common maximum number of retransmissions or the maximum number of retransmissions of only using in this case) that allows.
(2.2) method 2-2(Figure 25～Figure 28)
As illustrated in Figure 25～Figure 27, receive message #2(TA# 2 at UE20) (handle 1012) afterwards, send message #3(to eNB10 and handle 1013) when TA timer 251 has been expired journey before, (cancellation) executory random access procedure based on competition (handling 1018) is ended in the transmission of cancellation message # 3.
Namely, UE20 carries out situation about inserting at random to eNB10 according to TA# 1 under, in the process that this inserts at random, when comprising handle as the transmission of the signal of the S-TMSI of UE20 identifying information one example before, the valid expiration date of TA# 1 is when arriving, even before the valid expiration date of TA# 1 arrives, receive TA# 2, also end to insert at random.
In this case, as illustrated in Figure 28, UE20 uses rollback and carries out based on the retry of competing that inserts at random (handling the "Yes" path of 1105d).That is, according to based in the random access procedure of ending from the timing of the rollback time (stand-by time information) that eNB10 receives, carry out the retry that inserts at random.As illustrated in Figure 25～Figure 27, UE20 carries out transmission (handle 1011), the message #2(TA# 3 of message #1) reception (handling 1012) etc.
Here, receiving message #2(TA#2) the moment, TA timer 251 overtime (being not activated).Therefore, UE20 can be applied to the new TA# 3 that receives by message # 2 the transmission of UL transmission after this and regularly regulate in the random access procedure of retry, start TA timer 251.When recognizing at random access failure (producing conflict) when receiving message # 4, TA timer 251 can force to finish (processing 2004 of Figure 25～Figure 27).
As this example, in the overtime moment of TA timer 251, end random access procedure and carry out the retry that inserts at random, thus with (for example will remain process, the reception of the transmission of message # 3 and message #4) is implemented at last and compares, can be reduced in the UL data and send delaying before the beginning.
(2.3) method 2-3(Figure 25～Figure 27, Figure 29)
In addition, under the situation about inserting at random of retry based on competition, as illustrated in Figure 29, UE20 can not use rollback and carry out above-mentioned retry (handling the "Yes" path of 1105d) in that TA timer 251 is overtime as mentioned above.
That is, UE20 can not be applied in the random access procedure of termination from the rollback time that eNB10 receives, and carried out the retry that inserts at random.Because do not use rollback, so compare with the situation of using rollback, can be reduced in the UL data and send delaying before the beginning.
(2.4) method 2-4(Figure 30～Figure 33)
In addition, as illustrated in Figure 30～Figure 32, under the overtime situation of TA timer 251, UE20 can regardless of whether rollback all notify (handle 1021, from the "Yes" path of the processing 1105d of Figure 33 to handling 1113) to upper layer (for example, rrc layer).
Thus, the upper layer of UE20 starts the watchdog timer that inserts at random, and monitors the continuation (retry) of random access procedure.That is the supervision that inserts at random according to overtime (TA# 1 valid expiration date arrive) of TA timer 251 of UE20.In the continuation that inserts at random, when watchdog timer was overtime, the upper layer of UE20 carries out the residential quarter selection or processing (processing 1022 of Figure 30～Figure 32) is reselected in the residential quarter.
Therefore, UE20 can start the access at random with other residential quarter (eNB10) in early days, can be reduced in the UL data and send delaying before the beginning.In addition, the supervision of access at random with TA timer 251 overtime corresponding upper layers can be applicable to said method 2-1～2-3.
(3) the 3rd execution modes
Then, in the present embodiment, suppose that eNB10 can correctly manage the situation of the timer value of the TA timer 251 among the UE20 (two TA timers 151 of eNB10 and UE20,251 synchronous situations).In this case, eNB10 can identify the situation that the timing of the TA timer 251 of UE20 is continuing, so the believable TA value that receives from eNB10 of UE20.In addition, different with the 1st execution mode and the 2nd execution mode, can expect to send the TA value from eNB10.
And, UE20 be through with send based on the UL data of the TA value that arrives by the TA command reception after, when the DL data that send to UE20 arrived eNB10, eNB10 carried out call-in reporting (transmission of message #0) to this UE20.
Thus, the UE20 that receives this call-in reporting begins the random access procedure based on competition.Then, when handling 1012 from receiving message #2() to sending message #3(processing 1013) till during, when the TA timer of UE20 251 was overtime, UE20 any one among 3-1～3-3 by the following method guaranteed that UL is synchronous.
(3.1) method 3-1
With the method 1-2(Fig. 9 that records and narrates in the 1st execution mode～Figure 12) equally, UE20 will store in the memory 252 by the TA value that message # 2 receives from eNB10 in random access procedure in advance.And, when TA timer 251 is overtime before message # 3 is sent to eNB10, is applied to UL and sends startup TA timer 251 being stored in TA values in the memory 252 in advance.
(3.2) method 3-2
UE20 carries out any one among method 2-1～2-4 that the 2nd execution mode records and narrates.
(3.3) method 3-3(Figure 34～Figure 37)
As illustrated in Figure 34 and Figure 35, UE20 carries out situation about inserting at random to eNB10 according to TA# 1 under, in the process that this inserts at random, send the signal (message #3) (handling 1013) that comprises as the S-TMSI of UE20 identifying information one example.
Before the TA of UE20 timer 251 is overtime, when eNB10 receives this message # 3 from UE20 in random access procedure (handling 1013),, sends to UE20 and to comprise new TA value (TA# 3 as opportunity with the reception of this message # 3; The 2nd timing adjusting information) TA instruction (handling 1009a, the processing 1208a of Figure 36).
On the other hand, even UE20 also monitors the reception of TA instruction in the execution that inserts at random.For example, eNB10 is being sent message #3(processing 1013) afterwards, monitor the reception from the TA instruction of eNB10.In this monitors, when receiving the TA instruction from eNB10, (handle 1009a, the processing 1161 of Figure 37) the TA value (TA#3) of the TA instruction that receives is applied to UL, UE20(timer management portion 25) and sends, and the processing 1162 of startup TA timer 251(Figure 37).
In addition, the management of the UL resource among the UE20 can be identical with the 1st or the 2nd execution mode.For example, can be in the moment of the call-in reporting (message #0) that receives the DL data from eNB10, discharge the UL resource of guaranteeing so far, perhaps also can discharge this UL resource in the overtime moment of TA timer 251.In addition, even TA timer 251 overtime before receiving TA#3 (TA# 1 valid expiration date arrive) also can not discharge the UL resource of guaranteeing so far and keeps (continuing to use) (processing 2005 of Figure 35).
In addition, from send message # 3 to receive message # 4 during under the situation of TA timer expired, UE20 can use the mode identical with the 1st execution mode (any one of method 1-1～method 1-4).
Claims (4)
1. the timing adjusting method in the mobile communication system, this mobile communication system is carried out the up adjusting regularly that sends by inserting at random between mobile radio station and base station, it is characterized in that described timing adjusting method has following steps:
In described mobile radio station, have the timing of transmission adjusting information, and send;
Between described mobile radio station and base station, a plurality of parameters relevant with physical uplink control channel resource that allocate communications are used;
In described mobile radio station, uply send regularly adjusting information and carry out in the process at the uplink communication of described base station having, when the timer of regularly regulating the time limit of information for this transmission of control is expired journey, only discharge the partial parameters in a plurality of parameters relevant with physical uplink control channel resource of distributing.
2. mobile radio station, its by insert at random and the base station between carry out the up adjusting regularly that sends, it is characterized in that described mobile radio station possesses:
Transmitting element, it has the timing of transmission adjusting information, and sends;
Allocation units, its between described mobile radio station and base station, a plurality of parameters relevant with physical uplink control channel resource that allocate communications are used;
Releasing unit, uply send regularly adjusting information and carry out in the process at the uplink communication of described base station having, when the timer of regularly regulating the time limit of information for this transmission of control was expired journey, described releasing unit only discharged the partial parameters in a plurality of parameters relevant with physical uplink control channel resource of distributing.
3. base station, its by insert at random and mobile radio station between carry out the up adjusting regularly that sends, it is characterized in that,
Described mobile radio station possesses:
Transmitting element, it has the timing of transmission adjusting information, and sends;
Allocation units, its between described mobile radio station and base station, a plurality of parameters relevant with physical uplink control channel resource that allocate communications are used;
Releasing unit, uply send regularly adjusting information and carry out in the process at the uplink communication of described base station having, when the timer of regularly regulating the time limit of information for this transmission of control is expired journey, described releasing unit only discharges the partial parameters in a plurality of parameters relevant with physical uplink control channel resource of distributing
Described base station has the communication unit that communicates with described mobile radio station.
4. mobile communication system, this mobile communication system has mobile radio station and base station, and described mobile communication system is carried out the up adjusting regularly that sends by inserting at random between described mobile radio station and described base station, it is characterized in that,
Described mobile radio station
Have the timing of transmission adjusting information, and send;
Between described mobile radio station and base station, a plurality of parameters relevant with physical uplink control channel resource that allocate communications are used;
Uply send regularly adjusting information and carry out in the process at the uplink communication of described mobile radio station having, when the timer of regularly regulating the time limit of information for this transmission of control is expired journey, only discharge the partial parameters in a plurality of parameters relevant with physical uplink control channel resource of distributing.
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| CN201310163844.3A CN103260235B (en) | 2008-06-02 | 2008-06-02 | Timing adjusting method, movement station, base station and mobile communication system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310163844.3A CN103260235B (en) | 2008-06-02 | 2008-06-02 | Timing adjusting method, movement station, base station and mobile communication system |
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| CN200880129608.7A Division CN102047737B (en) | 2008-06-02 | 2008-06-02 | Method for timing adjustment, mobile station, base station, and mobile communication system |
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| CN103260235A true CN103260235A (en) | 2013-08-21 |
| CN103260235B CN103260235B (en) | 2016-07-06 |
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|---|---|---|---|---|
| CN1478366A (en) * | 2000-12-11 | 2004-02-25 | ������������ʽ���� | Radio communication system |
| EP1919227A1 (en) * | 2005-08-23 | 2008-05-07 | NEC Corporation | System and method for synchronization between a plurality of base stations and mobile station in upstream link radio transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478366A (en) * | 2000-12-11 | 2004-02-25 | ������������ʽ���� | Radio communication system |
| EP1919227A1 (en) * | 2005-08-23 | 2008-05-07 | NEC Corporation | System and method for synchronization between a plurality of base stations and mobile station in upstream link radio transmission |
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| 3GPP: "《3GPP TS 36.321 V8.2.0 (2008-05)》", 31 May 2008 * |
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