CN103687043B - A kind of method setting up radio resource control connection - Google Patents
A kind of method setting up radio resource control connection Download PDFInfo
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Abstract
A kind of method setting up radio resource control connection, described method includes: cluster user UE sends radio resource control RRC connection request, carries instruction user accessing information in the Msg3 corresponding with RRC connection request；Base station eNB receives described Msg3, determines UE access set group-calling business according to instruction user accessing information；ENB, after UE sends RRC connection establishment message, distributes ascending resource for UE；Cluster UE configures according to RRC connection establishment message, transmits RRC connection setup complete message according to described ascending resource.After the application embodiment of the present invention, shorten the time of RRC connection establishment.
Description
Technical field
The application relates to communication technical field, sets up radio resource control more particularly, to one and connects (RRC)
Method.
Background technology
Broadband multimedia cluster system based on TD-LTE technology, not only can support TD-LTE mobile communication system self
Various multimedia services, and basic trunked call service and Cluster Multimedia business can be provided, such as voice group call service, language
Sound individual calling, visual group exhale, visual individual calling, network browsing, mobile office, video monitoring, the business such as video playback and video conference.
In these business, trunking communication has the most strictly requirement to the time that group calling is set up.In order to reach group-calling service
The purpose quickly set up, needs to take a series of measure to protect broadband multimedia cluster system based on TD-LTE technology
Card.
The cluster user (UE) being under idle condition, when initiating group calling, triggers RRC connection establishment process to build
Vertical RRC connects.Seeing accompanying drawing 1 is RRC successful connection Establishing process schematic diagram in LTE system, mainly includes three steps:
Step 101, UE send one by up public control (UL-CCCH) channel on Signaling Radio Bearer (SRB) 0
RRC connection request (RRC Connection Request) message, mainly carries the initial user mark of UE and sets up
The information such as reason.This higher layer message triggers the lower layer entities of UE and carries out based on the random access procedure competed, and RRC connection request
Message then corresponds to the Msg3 in low layer random access procedure.
Step 102, eNode B reply a RRC connection on SRB0 by descending public control (DL-CCCH) channel and build
Vertical (RRC Connection Setup) message, this message generally corresponds to the Msg4 in low layer random access procedure, wherein takes
With the complete configuration information of SRB1, the configuration parameter of each entity such as including PHY/MAC/RLC/PDCP.
After step 103, UE are according to the RRC complete SRB1 of connection establishment message arrangement, sent out on SRB1 by UL-DCCH channel
Send a RRC connection establishment to complete (RRC Connection Setup Complete) message, this message carries up side
To Initial NAS message, such as Attach Request, TAU Request, Service Request, Detach Request
Deng, after eNode B receives RRC connection setup complete message, NAS message therein is transmitted to mobile management entity (MME) and uses
Connect in setting up S1.
Stochastic accessing be set up wireless link between UE and network must be through step.In LTE system, Stochastic accessing is divided into
Competition Stochastic accessing and non-competing Stochastic accessing two kinds.Competition Stochastic accessing refers to that eNode B is not special for UE distribution
Preamble code, but UE randomly chooses Preamble code the Stochastic accessing initiated.It is initially accessed under RRC IDLE state
Under the scene of (i.e. RRC connection establishment), UE independently triggers competition Stochastic accessing, and eNode B does not has any prior information.
Accompanying drawing 2 is competition random access procedure schematic diagram in LTE system, mainly includes four steps:
Step 201, UE randomly choose Stochastic accessing Preamble code in message in uplink random accesses channel (PRACH)
(Msg) send in 1.
The accidental access response i.e. Msg2 that step 202, eNode B produce in DL-SCH channel MAC layer.
Step 203, UE are at the schedule information i.e. Msg3 of UL-SCH channel uplink first.
After UE is properly received Msg2, transmit according on the ascending resource that uplink authorization in accidental access response is its distribution
Msg3.For different scenes, Msg3 comprises different contents.Rrc layer can be carried under the scene being initially accessed generate
RRC connection request message, does not comprise NAS message.
Step 204, eNode B are at the DL-SCH channel i.e. Msg4 of contention resolved information.
Only after random access procedure completes, eNode B and UE is only possible to carry out the data transmission and reception of routine.When
UE is when eNode B request is used for the ascending resource of new transmission, and UE needs to send dispatch request (SR).SR is triggered by BSR, when often
Rule BSR is triggered, and when not having ascending resource can use, UE will send SR.The RRC connection establishment sent for UE completes (RRC
Connection Setup Complete) message, UE typically requires transmission SR.SR has a following two form:
(1) special SR:eNode B be UE distribute specific PUCCH resource for sending dispatch request, special SR is the cycle
Property is effective.When UE needs to send SR, if being configured with special SR, will preferentially use proprietary SR, and in the subframe of special SR
During arrival, trigger the transmission of special SR.
(2) Stochastic accessing SR: distribute special SR resource without for UE, or reach maximum transmitted in special SR transmission
The most not receiving the uplink scheduling of eNode B during number of times, UE will stop using special SR, and use Stochastic accessing SR.So,
UE can pass through random access procedure, and BSR is sent to eNode B.Stochastic accessing SR uses the random access procedure of competition,
BSR will be sent to eNode B at Msg3.
The cluster UE being under idle condition, when initiating group calling, can trigger RRC connection establishment process to complete RRC
Connection establishment.During a successful RRC connection establishment, UE needs successively to send two message to eNode B.For
RRC connection request message, after UE is properly received Msg2, according to the ascending resource that uplink authorization in accidental access response is its distribution
It is transmitted.For RRC connection setup complete message, in LTE protocol, Msg4 does not carries uplink authorization as Msg2, logical
Often UE needs to send SR.If UE is configured with special SR, need, until the subframe of special SR arrives, to trigger the transmission of special SR.
After eNode B receives SR, can send uplink authorization is that this UE little ascending resource of distribution carries out BSR transmission.When eNode B receives
After the BSR that UE sends, the logic channel buffer area data volume reported according to UE is that it distributes ascending resource.UE is according still further to up
The ascending resource for its distribution is authorized to complete the transmission of RRC connection setup complete message.
It can be seen that UE is from receiving RRC connection establishment message to sending during RRC connection setup complete message, deposit
At certain processing delay.If UE does not configures special SR or does not the most receive when special SR sends and reaches maximum transmission times
To the uplink scheduling of eNode B, UE will stop using special SR, and use Stochastic accessing SR, by competition Stochastic accessing, and will
BSR is sent to eNode B at Msg3, equally exists processing delay.
Summary of the invention
The embodiment of the present invention proposes a kind of method setting up radio resource control connection, shortens RRC connection establishment
Time.
The technical scheme of the embodiment of the present invention is as follows:
A kind of method setting up radio resource control connection, described method includes:
Cluster user UE sends radio resource control RRC connection request, in the message corresponding with RRC connection request
Msg3 carries instruction user accessing information；
Base station eNB receives described Msg3, determines UE access set group-calling business according to instruction user accessing information；
ENB, after UE sends RRC connection establishment message, distributes ascending resource for UE；
Cluster UE configures according to RRC connection establishment message, completes according to described ascending resource transmission RRC connection establishment
Message.
The described instruction user accessing information that carries includes that the reserved place of the cell by RRC connection request carries instruction user
Access information.
The described instruction user accessing information that carries includes carrying instruction user accessing information by the reserved value setting up reason.
The described instruction user accessing information that carries includes that the emergency emergency by setting up in reason indicates user
Access information.
Described for UE distribution ascending resource include: by send uplink authorization be UE distribute ascending resource.
Described is that UE distribution ascending resource includes by sending uplink authorization: by physical downlink control channel PDCCH
Upper transmission uplink authorization is that UE distributes ascending resource.
Described eNB, after UE sends RRC connection establishment request message, includes for UE distribution ascending resource: eNB first sends out to UE
Sending RRC connection establishment to ask, distribute ascending resource for UE after the T of interval, T >=T1+T2+T3, T1 are that UE resolves RRC connection establishment
The time of request, T2 is the time of UE configuration signal radio bearer SRB1, when T3 is to assemble RRC connection setup complete message
Between.
Described cluster UE carries out configuration according to RRC connection establishment message and includes: cluster UE monitors PDCCH, connects according to RRC
Set up message to configure.
Described cluster UE carries out configuration according to RRC connection establishment message and includes: cluster UE joins according to RRC connection establishment message
Put SRB1.
From technique scheme it can be seen that in embodiments of the present invention cluster UE send include indicate user access letter
The RRC connection request of breath, carries instruction user accessing information in the Msg3 corresponding with RRC connection request；ENB receives described
Msg3, determines UE access set group-calling business according to instruction user accessing information；ENB sends after RRC connection establishment message to UE,
Ascending resource is distributed for UE；UE configures according to RRC connection establishment message, connects according to described ascending resource transmission RRC and builds
Vertical completion message.Cluster UE need not send dispatch request, it is possible to sends RRC connection ahead of time on corresponding ascending resource and builds
Vertical completion message, shortens the time of RRC connection establishment, accelerates RRC establishment of connection.
Accompanying drawing explanation
Fig. 1 is RRC successful connection Establishing process schematic diagram in LTE system；
Fig. 2 is competition random access procedure schematic diagram in LTE system；
Fig. 3 is to set up the method flow schematic diagram that radio resource control connects；
Fig. 4 is the schematic flow sheet after eNB receives the Msg3 that UE sends.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention express clearer, below in conjunction with the accompanying drawings and specifically
The present invention is further described in more detail for embodiment.
In embodiments of the present invention, cluster UE sends RRC connection request, and RRC connection request triggers the underlying physical of UE and enters
Row random access procedure based on competition, carries instruction user accessing information in the Msg3 corresponding with RRC connection request；eNB
Receive described Msg3, determine UE access set group-calling business according to instruction user accessing information；ENB sends RRC connection to UE and builds
After vertical message, distribute ascending resource for UE；UE configures according to RRC connection establishment message, transmits according to described ascending resource
RRC connection setup complete message.So, cluster UE need not send dispatch request, it is possible to ahead of time for its distribute up
Send RRC connection setup complete message in resource, accelerate the time of RRC connection establishment process, further speed up Liao Ji group
The foundation exhaled.
In broadband multimedia cluster system based on TD-LTE technology, it is in the cluster under idle condition (RRC-Idle)
UE, when initiating group calling, triggers RRC connection establishment process and sets up RRC connection, by cluster UE by RRC-Idle State Transferring
For RRC-Connection state.RRC connection establishment process relates to the random access procedure that low layer is at war with.
Cluster UE sends RRC connection request message, and this message is corresponding to the Msg3 in low layer random access procedure.Cluster UE
Msg3 can carry and can indicate that user accessing information, in order to eNode B knows that this UE's sets up reason.ENode B root
Know user accessing information according to competitive mode random access procedure Msg3 carries instruction user accessing information, determine that this user is intended to
Access set group-calling business, eNode B is after sending the Msg4 corresponding with RRC connection establishment message, and retransmiting uplink authorization is
This UE distributes ascending resource.Cluster UE need not send dispatch request, it is possible to sends RRC connection setup complete message.
Seeing accompanying drawing 3 is to set up the method flow schematic diagram that radio resource control connects, and specifically includes following steps:
Step 301, cluster UE send RRC connection request, carry instruction user in the Msg3 corresponding with RRC connection request
Access information.
Specifically, UE sends a RRC connection request (RRC Connection by UL-CCCH channel on SRB0
Request) message, the lower layer entities of this message trigger UE carries out random access procedure based on competition.RRC connection request message
Corresponding to the Msg3 in low layer random access procedure.Msg3 is properly received uplink authorization in the accidental access response of Msg2 according to UE
It is transmitted for its ascending resource distributed, and instruction user accessing information can be carried in Msg3.Instruction user accesses letter
Breath includes that user needs the mark of access set group-calling business.
The reserved place utilizing cell in RRC connection request message in Msg3 and/or the reserved value setting up reason carry instruction
User accessing information.Set up reason and refer to EstablishmentCause in RRC Connection Request cell.Also may be used
With by utilizing the existing emergency " emergency " set up in reason to indicate user accessing information.Connect according to instruction user
Enter information, it can be determined that whether user wants access set group-calling business.
Step 302, eNB receive Msg3, determine UE access set group-calling business according to instruction user accessing information；ENB to
After UE sends RRC connection establishment message, distribute ascending resource for UE.
After eNode B receives the Msg3 that cluster UE sends, the instruction user according to carrying in the Msg3 received accesses letter
Breath judges whether this user is intended to access set group-calling business.If this user needs access set group-calling business, eNode B exists
Send Msg4(and now comprise RRC connection establishment message) after, can retransmit uplink authorization is that this UE distributes ascending resource, for UE
Send RRC connection setup complete message.
ENB first sends the request of RRC connection establishment to UE, distributes ascending resource, T >=T1+T2+T3, T1 for UE after the T of interval
Being the time of UE parsing RRC connection establishment request, T2 is the time of UE configuration signal radio bearer SRB1, and T3 is to assemble RRC even
Connect the time setting up completion message.Wherein, T1, T2 and T3 depend on that hardware realizes, and the present invention does not limits.
Specifically, after eNB receives the Msg3 that UE sends, eNode B carries out following operating process, sees accompanying drawing 4:
401, eNB is according to the instruction user accessing information carried in Msg3, knows instruction user accessing information.
402, according to instruction user accessing information, eNodeB judges whether this UE carries out RRC because of access set group-calling business
Connection establishment process.If it is, perform 403；Otherwise, 404 are performed.
403, eNB is replied a RRC connection establishment (RRC Connection Setup) on SRB0 disappeared by DL-DCCH
Breath.RRC connection request message then corresponds to the Msg4 in low layer random access procedure, wherein carries the complete configuration letter of SRB1
Breath, the configuration parameter of each entity such as including PHY/MAC/RLC/PDCP.After eNode B sends Msg4, then sent out by PDCCH
Give the uplink authorization of this UE.
404, eNB is according to standard LTE protocol requirement, performs follow-up handling process.
Step 103, cluster UE configure according to RRC connection establishment message, connect according to described ascending resource transmission RRC
Set up completion message.
Specifically, after cluster UE receives the Msg4 that eNode B sends, can enter according to RRC connection establishment message in Msg4
Row configuration.Meanwhile, UE monitors PDCCH always, receives the uplink authorization belonging to this UE.After configuring complete SRB1, UE leads to
Cross UL-DCCH channel on SRB1, to send a RRC connection establishment complete (RRC Connection Setup Complete) and disappear
Breath, carries the Initial NAS message of up direction in this message.
3 SRB, respectively SRB0, SRB1 and SRB2 are defined in LTE system.SRB1 disappears for the RRC carried on DCCH
Breath, before SRB2 sets up, it is also possible to carry NAS message with SRB1.And SRB2 is for carrying the NAS message on DCCH, SRB2's
Priority is less than SRB1, and network must could be set up after security activation and use SRB2.Therefore, cluster UE is according to RRC even
Connect and set up message arrangement SRB1.
RRC connection setup complete message is transmission on the ascending resource that uplink authorization is this UE distribution.So, cluster
UE need not send dispatch request, it is possible to is doing sth. in advance as sending RRC connection setup complete message on ascending resource of its distribution,
Accelerate RRC connection establishment.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.All
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the protection of the present invention
Within the scope of.
Claims (8)
1. set up the method that radio resource control connects for one kind, it is characterised in that described method includes:
Cluster user UE sends radio resource control RRC connection request, in message Msg3 corresponding with RRC connection request
Carry instruction user accessing information；
Base station eNB receives described Msg3, determines UE access set group-calling business according to instruction user accessing information；
ENB, after UE sends RRC connection establishment message, distributes ascending resource for UE, and specifically, eNB first sends RRC to UE and connects
Set up request, after the T of interval, distribute ascending resource for UE, when T >=T1+T2+T3, T1 are UE parsing RRC connection establishment requests
Between, T2 is the time of UE configuration signal radio bearer SRB1, and T3 is the time assembling RRC connection setup complete message；
Cluster UE configures according to RRC connection establishment message, completes to disappear according to described ascending resource transmission RRC connection establishment
Breath.
Set up the most according to claim 1 radio resource control connect method, it is characterised in that described in carry instruction
User accessing information includes that the reserved place of the cell by RRC connection request carries instruction user accessing information.
Set up the most according to claim 1 radio resource control connect method, it is characterised in that described in carry instruction
User accessing information includes carrying instruction user accessing information by the reserved value setting up reason.
Set up the most according to claim 1 radio resource control connect method, it is characterised in that described in carry instruction
User accessing information includes that the emergency emergency by setting up in reason indicates user accessing information.
Set up the method that radio resource control connects the most according to claim 1, it is characterised in that described for UE distribution
Ascending resource includes: by send uplink authorization be UE distribute ascending resource.
Set up the method that radio resource control connects the most according to claim 5, it is characterised in that described by sending
Uplink authorization be UE distribution ascending resource include: by physical downlink control channel PDCCH send uplink authorization be that UE divides
Join ascending resource.
Set up the method that radio resource control connects the most according to claim 1, it is characterised in that described cluster UE presses
Carry out configuration according to RRC connection establishment message to include: cluster UE monitors PDCCH, configure according to RRC connection establishment message.
Set up the method that radio resource control connects the most according to claim 1, it is characterised in that described cluster UE presses
Carry out configuration according to RRC connection establishment message to include: cluster UE is according to RRC connection establishment message arrangement SRB1.
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| CN107645785A (en) * | 2016-07-22 | 2018-01-30 | 普天信息技术有限公司 | A kind of random access processing method and device |
| EP3461218B1 (en) * | 2016-08-16 | 2021-09-01 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Methods and devices for transmitting information |
| CN107295698B (en) * | 2017-06-28 | 2021-01-29 | 北京小米移动软件有限公司 | Call connection establishing method, device and system |
| CN107949001A (en) * | 2017-12-07 | 2018-04-20 | 海能达通信股份有限公司 | A kind of method, apparatus and system of reduction group service disconnection duration |
| WO2020056639A1 (en) * | 2018-09-19 | 2020-03-26 | Nokia Shanghai Bell Co., Ltd. | Methods, devices and computer readable medium for resource information for early data transmission |
| CN110944397B (en) * | 2018-09-25 | 2023-01-17 | ***通信有限公司研究院 | Msg5 sending method, network side equipment and user equipment |
| CN113411910A (en) * | 2021-08-23 | 2021-09-17 | 四川创智联恒科技有限公司 | Scheduling mechanism for accelerating 5G-NR random access |
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Denomination of invention: Method for setting up radio resource control protocol connection Effective date of registration: 20180117 Granted publication date: 20161221 Pledgee: Bank of Beijing Limited by Share Ltd Century City Branch Pledgor: Pu Tian Information Technology Co., Ltd Registration number: 2018990000033 |
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Denomination of invention: Method for setting up radio resource control protocol connection Effective date of registration: 20181026 Granted publication date: 20161221 Pledgee: Bank of Beijing Limited by Share Ltd Century City Branch Pledgor: Pu Tian Information Technology Co., Ltd Registration number: 2018990000975 |
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