CN102014520A - Method for ensuring RRC (Radio Resource Control) signaling time sequence at UE (User Equipment) side - Google Patents
Method for ensuring RRC (Radio Resource Control) signaling time sequence at UE (User Equipment) side Download PDFInfo
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Abstract
The invention discloses a method for ensuring an RRC (Radio Resource Control) signaling time sequence at the UE (User Equipment) side, which comprises the following steps of: transmitting an RRC connection setup request by the UE; carrying out message analysis processing on a received RRC connection setup message by the UE; if the RRC connection setup message is correct, transmitting an RRC connection setup completion message to an AM RLC (Radio Link Control) entity of an RLC layer and indicating the RLC layer for transmitting confirmed response in an RLC-AM interface; and if an RRC layer of the UE receives the confirmed response derived from the RLC layer, transmitting an initial direct transfer message to the network side and establishing signaling connection with a CN (Core Network). The invention adopts the confirmed response of the RLC AM as a basis for successfully transmitting signaling data to the network side, eliminates the condition that the initial direct transfer message arrives at the network side prior to the RRC connection setup completion message and ensures that signaling can arrive at the network side RRC in sequence.
Description
Technical field
The present invention relates to the 3G (Third Generation) Moblie technology, particularly guarantee a kind of method of RRC signaling time-sequence in the 3-G (Generation Three mobile communication system) higher-layer protocols in the UE side.
Background technology
In 3-G (Generation Three mobile communication system), higher-layer protocols comprises Non-Access Stratum and Access Layer, and wherein Non-Access Stratum mainly carries out the Signalling exchange between user terminal (being called for short UE) and the core net (being called for short CN), as authentication, the registration of route district, lane place, speech business, Packet Service etc.And Access Layer mainly carries out the Signalling exchange between portable terminal and the wireless network control unit (being called for short RNC), and wherein the Radio Resource control module of Access Layer (being called for short RRC) can be responsible for the connection foundation of Radio Link and the carrying of non-access layer information.
In mobile communication system, want the synchronous of maintenance state between each entity of UE and network side, for RRC, UE side RRC and network side RRC guarantee both sides RRC state synchronization by sending and receive idle message, require the transmission of idle message and reception to carry out according to certain time sequence like this.Usually can guarantee that by the mode of acknowledgement messaging the sequential of idle message is correct between UE and the network side RRC entity.
When UE is in idle condition, when Non-Access Stratum has data demand to transmit, as initiate audio call, periodic location update etc., UE side RRC will at first initiate RRC and connect the process of setting up, connect after the process of setting up finishes at RRC,, set up UE and be connected with the signaling of CN by sending initial direct-sending message.By initial direct-sending and up-downgoing direct-sending message, RRC will carry the NAS signaling, finish the Signalling exchange of high-level business at chain of command.It is that RRC connection setup complete message (RRCCONNECTION SETUP COMPLETE) sends to wireless chain control layer (being called for short RLC) that RRC connects the standard that the process of setting up finishes.Accompanying drawing 1 is prior art high level requests NAS data flow block diagram under idle condition.As seen from the figure, in the prior art, UE is when being in idle condition, and when Non-Access Stratum had data demand to transmit, UE RRC at first carried out RRC and connects the process of setting up, and carried out the initial direct-sending process after the process success is set up in the RRC connection.It is that UE RRC sends to rlc layer with RRC connection setup complete message (RRCCONNECTION SETUP COMPLETE) that RRC connects the standard of setting up the process success, and RRC sends initial direct-sending (INITIAL DIRECT TRANSFER) then.
RLC is positioned at the below of RRC, and for RRC provides radio bearer, the radio bearer that transmits RRC message is also referred to as Signaling Radio Bearer, and totally 5, RB0-RB4.Be divided three classes according to the transfer mode difference: transparent mode (RLC-TM), Unacknowledged Mode (RLC-UM) and affirmation mode (RLC-AM).Wherein RLC-AM requires when RLC PDU data successfully send to opposite end AM RLC entity, opposite end AM RLC entity will send confirms report, notice PDU transmit leg data successfully receive, otherwise transmit leg AM RLC entity will retransmit up to receiving that affirmation bag or AM RLC entity reset owing to sending success these PDU data.The RLC mode-definition of Signaling Radio Bearer is as follows: (UL:RLC-TM, DL:RLC-UM), RB1 (RLC-UM), RB2-RB4 are (RLC-AM) to RB0.Wherein RB2 transmits the signaling of non-bearing NAS, RB3﹠amp; RB4 transmits the signaling of carrying NAS.
UE side RRC connection setup complete message (RRC CONNECTION SETUP COMPLETE) is two continuous upstream messages with initial direct-sending message (INITIAL DIRECT TRANSFER), RRC CONNECTION SETUP COMPLETE need use RB2 to transmit in the AM mode, and INITIAL DIRECT TRANSFER is because carrying NAS message needs to use RB3 to send in the AM mode.The UE side can guarantee that when processing messages message RRC CONNECTION SETUP COMPLETE sends prior to INITIAL DIRECT TRANSFER message, but, these two message go up (RB2 and RB3) because being carried on different RB respectively, therefore the process of transmitting at rlc layer is fully independently, be subjected under the situation of air interference, RB2 or (with) data re-transmission may take place in RB3, make network side RRC entity that there is uncertainty in the reception sequential of these two message like this, the INITIAL DIRECT TRANSFER message that exists the back to send arrives network side RRC prior to RRC CONNECTION SETUP COMPLETE message.When INITIAL DIRECT TRANSFER message arrives network side RRC prior to RRC CONNECTION SETUP COMPLETE message, because this moment, network side RRC did not receive RRC CONNECTION SETUP COMPLETE message, network side RRC also is in and connects the state of setting up in the process, the INITIAL DIRECT TRANSFER message that receives for this moment can abandon, to wait for the arrival of INITIAL DIRECT TRANSFER after the RRC CONNECTION SETUP COMPLETE message that makes network after receiving, send to so always, and UE will can not retransmit INITIAL DIRECT TRANSFER, cause final network terminal to discharge connection, make the NAS service fail that calls request because of overtime.
Prior art mainly adopts in network side RRC entity and is protected, and prevents this and causes service fail because back transmission message arrives first the sequential mistake of generation.
Summary of the invention
The objective of the invention is to propose a kind of method that guarantees the RRC signaling time-sequence in the UE side, promptly eliminate the situation of initial direct-sending message (INITIAL DIRECT TRANSFER), guarantee that signaling can arrive network side RRC according to the order of sequence prior to RRC connection setup complete message (RRC CONNECTION SETUP COMPLETE) arrival network side.
Technical scheme of the present invention is, a kind ofly guarantees to it is characterized in that the method for RRC signaling time-sequence in the UE side, may further comprise the steps:
Described UE sends RRC and connects the request of foundation;
Described UE sets up message to the RRC connection that receives and carries out the message parse processing, if it is correct that message is set up in described RRC connection, then send the AM RLC entity of RRC connection setup complete message, and in the RLC-AM interface, indicate described rlc layer to send and confirm to reply to rlc layer;
If the rrc layer of described UE is received from the described affirmation of rlc layer reply, then send initial direct-sending message to network side, foundation is connected with the signaling of CN.
Wherein, said method is further comprising the steps of:
Described RLC receives that the SDU that carries that RRC sends sends the AM request of data of confirming indication;
Described RLC carries out the segmentation reorganization of SDU,, is SN_E SN number that writes down last bag PDU calculate the PDU bag that comprises this SDU SN number;
Described RLC checks that the RLC AM that receives confirms bag, relatively SN_E with confirm SN number of expectation AM RLC entity sends in the bag next bag, when this SN greater than SN_E, then send SDU and confirm indication to RRC, wait for if do not satisfy then continue, report an error up to RLC.
The inventive method adopts RLC AM to confirm to reply the foundation that successfully sends to network side as signaling data, when UE arrives network side by the packet (SDU) that RLC AM pattern sends, RLC can report and confirm to reply to RRC, this signaling of notice RRC has successfully sent to network side, and RRC can carry out the transmission of next bar signaling this moment.
Description of drawings
Fig. 1 works as UE to be in high level requests NAS data flow block diagram under the idle condition in the prior art
Fig. 2 be in one embodiment of the invention UE for the rrc layer process chart of high level requests NAS data
Fig. 3 be in one embodiment of the invention UE for the rlc layer process chart of high level requests NAS data
Embodiment
Be described further for the specific embodiment of the present invention below in conjunction with accompanying drawing.
A kind of method of guaranteeing the RRC signaling time-sequence in the UE side of the present invention, realize by following steps, be that UE sends RRC connection foundation request, UE sets up message to the RRC connection that receives and carries out the message parse processing, if it is correct that message is set up in described RRC connection, then send the AM RLC entity of RRC connection setup complete message, and in the RLC-AM interface, indicate described rlc layer to send and confirm to reply to rlc layer.If the rrc layer of described UE is received from the described affirmation of rlc layer reply, then send initial direct-sending message to network side, foundation is connected with the signaling of CN.Wherein at rlc layer, described RLC receives that the SDU that carries that RRC sends sends the AM request of data of confirming indication, and RLC carries out the segmentation reorganization of SDU,, is SN_E SN number that writes down last bag PDU calculate the PDU bag that comprises this SDU SN number.Described RLC checks that the RLC AM that receives confirms bag, relatively SN_E with confirm SN number of expectation AM RLC entity sends in the bag next bag, when this SN greater than SN_E, then send SDU and confirm indication to RRC, wait for if do not satisfy then continue, report an error up to RLC.
As shown in Figure 2, the UE rrc layer process that receives high level requests NAS data under idle condition may further comprise the steps:
Step S101, UE wait in idle condition, send NAS message up to receiving the upper strata request;
Step S102 sends RRC and connects the request of setting up (RRC CONNECTION REQUEST);
Step S103, wait for that receiving the RRC connection sets up message (RRC CONNECTION SETUP), connect when setting up message (RRC CONNECTION SETUP) when receiving RRC, carry out message parse and handle, when message is correct, execution in step S105, if receiving that RRC connects does not set up message, execution in step S104 then, wherein, occur mistake in the message process when processing RRC connects to set up, RRC will send failure/refuse information;
Step S104 does not set up message and causes when overtime when receiving that RRC connects, and RRC will retransmit RRC and connect the request of foundation, i.e. step S102, if number of retransmissions is then got back to step S101 above N300, N300 is the counter of network configuration RRC connection request message;
Step S105 sends RRC connection setup complete message (RRC CONNECTION SETUP COMPLETE) to AM RLC entity, and indication needs to send and confirms to reply in the RLC-AM interface;
Step S106 waits for that RLC sends message acknowledgement, replys if receive affirmation, shows that RRC connection setup complete message (RRC CONNECTION SETUP COMPLETE) has successfully sent to network side;
Step S 107, send initial direct-sending message (INITIAL DIRECT TRANSFER);
Step S108, foundation is connected with the signaling of CN.
Again as shown in Figure 3, for above-mentioned steps S105 to S106, rlc layer is receiving that requiring RLC-AM to send confirms that the process of replying may further comprise the steps:
Step S201, RLC receive the AM request of data that RRC sends, and carry SDU and send the affirmation indication;
Step S202 judges whether to carry out SDU and send to confirm, if, execution in step S203 then; Otherwise execution in step S204;
Step S203 carries out the segmentation reorganization back execution in step S205 of RLC SDU;
Step S204 carries out the reorganization of common standard RLC AM data sementation and sends back execution in step S208;
Step S205 sends the PDU data,, is SN_E SN number that writes down last bag PDU calculate the PDU bag that comprises this SDU SN number;
Step S206, the RLC AM that check to receive confirms bag, relatively SN_E with confirm SN number of expectation AM RLC entity sends in the bag next bag, when this SN greater than SN_E, execution in step S207 waits for if do not satisfy then continue, and reports an error up to RLC.
Step S207 sends SDU to RRC and confirms indication;
Step S208, RLC SDU process of transmitting finishes.
Sum up above technology implementation scheme, the inventive method is for guaranteeing UE side RRC and network side RRC state synchronization, employing is carried out segmentation to the SDU that uses RLC-AM to send, the mode that PDU after the reorganization follows the tracks of, by checking that this SDU comprises or SN number of affiliated PDU, last SN number of the relevant PDU of record, the PDU SN comparison that next one expectation local terminal AMRLC entity in the confirmation of receipt bag of this maximum S number and RLC-AM receiving terminal is sent, judge whether this RLC SDU successfully sends to network side, when SN number of last PDU under this SDU confirms PDU SN that next the expectation local terminal AMRLC entity in the bag sends less than the RLC that receives, judge that this RLC SDU successfully sends, otherwise wait for up to RLC always and makeing mistakes.
The inventive method adopts the method that increases the interface parameters indication, and when RRC called RLC AM interface transmission data, whether indication AM RLC entity needs to send signaling was confirmed to reply.When requiring the RLC transmission to confirm to reply in the interface, RLC then carries out SDU PDU relevant treatment, otherwise sends data according to general RLC SDU send mode.
Claims (2)
1. guarantee to it is characterized in that the method for RRC signaling time-sequence in the UE side for one kind, may further comprise the steps:
Described UE sends RRC and connects the request of foundation;
Described UE sets up message to the RRC connection that receives and carries out the message parse processing, if it is correct that message is set up in described RRC connection, then send the AM RLC entity of RRC connection setup complete message, and in the RLC-AM interface, indicate described rlc layer to send and confirm to reply to rlc layer;
If the rrc layer of described UE is received from the described affirmation of rlc layer reply, then send initial direct-sending message to network side, foundation is connected with the signaling of CN.
2. guarantee the method for RRC signaling time-sequence according to claim 1 in the UE side, it is characterized in that, further comprising the steps of:
Described RLC receives that the SDU that carries that RRC sends sends the AM request of data of confirming indication;
Described RLC carries out the segmentation reorganization of SDU,, is SN_E SN number that writes down last bag PDU calculate the PDU bag that comprises this SDU SN number;
Described RLC checks that the RLC AM that receives confirms bag, relatively SN_E with confirm SN number of expectation AM RLC entity sends in the bag next bag, when this SN greater than SN_E, then send SDU and confirm indication to RRC, wait for if do not satisfy then continue, report an error up to RLC.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000396A1 (en) * | 2010-06-30 | 2012-01-05 | 中兴通讯股份有限公司 | Method, system and apparatus for transmitting downlink signaling |
| CN102340826A (en) * | 2011-11-17 | 2012-02-01 | 电信科学技术研究院 | Data transmission method and device |
| CN108242975A (en) * | 2016-12-26 | 2018-07-03 | 大唐移动通信设备有限公司 | A kind of method and device of more transmitting signaling downwards |
| WO2018201921A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Communication method and device |
| CN111052781A (en) * | 2017-09-08 | 2020-04-21 | 华为技术有限公司 | Method and apparatus for negotiating security and integrity algorithms |
| US11418962B2 (en) | 2017-10-30 | 2022-08-16 | Huawei Technologies Co., Ltd. | Method and Device for Obtaining UE Security Capabilities |
Family Cites Families (3)
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| CN100370713C (en) * | 2004-06-15 | 2008-02-20 | 华为技术有限公司 | Synchronous realization between wireless network controller and user apparatus |
| CN100384263C (en) * | 2005-10-18 | 2008-04-23 | 华为技术有限公司 | Method for improving message transmission time delay in connection course |
| CN101155334A (en) * | 2006-09-29 | 2008-04-02 | 华为技术有限公司 | Initial direct-sending message transmission method, system, terminal and base station controller |
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- 2009-09-08 CN CN 200910195352 patent/CN102014520B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000396A1 (en) * | 2010-06-30 | 2012-01-05 | 中兴通讯股份有限公司 | Method, system and apparatus for transmitting downlink signaling |
| CN102340826A (en) * | 2011-11-17 | 2012-02-01 | 电信科学技术研究院 | Data transmission method and device |
| CN102340826B (en) * | 2011-11-17 | 2016-05-25 | 电信科学技术研究院 | A kind of method and apparatus of transfer of data |
| CN108242975A (en) * | 2016-12-26 | 2018-07-03 | 大唐移动通信设备有限公司 | A kind of method and device of more transmitting signaling downwards |
| CN108242975B (en) * | 2016-12-26 | 2020-11-06 | 大唐移动通信设备有限公司 | Method and device for issuing multiple signaling |
| WO2018201921A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Communication method and device |
| CN111052781A (en) * | 2017-09-08 | 2020-04-21 | 华为技术有限公司 | Method and apparatus for negotiating security and integrity algorithms |
| CN111052781B (en) * | 2017-09-08 | 2021-10-15 | 华为技术有限公司 | Method and apparatus for negotiating security and integrity algorithms |
| US11297502B2 (en) | 2017-09-08 | 2022-04-05 | Futurewei Technologies, Inc. | Method and device for negotiating security and integrity algorithms |
| US11895498B2 (en) | 2017-09-08 | 2024-02-06 | Futurewei Technologies, Inc. | Method and device for negotiating security and integrity algorithms |
| US11418962B2 (en) | 2017-10-30 | 2022-08-16 | Huawei Technologies Co., Ltd. | Method and Device for Obtaining UE Security Capabilities |
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